“Perhaps the moral of the story is if you are going to sleep it off you better climb in the back seat.”
Probably not good enough. If you have the keys you would still be subject to DUI. Its happened but depends on the state.
No the moral of the story drulnk driver defender and therefore fan of criminals is DONT GET INTO A CAR DRUNK!
It’s even happened for someone sleeping in his driveway listening to his car stereo.